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Gold, which has a density of 19.32 g/cm3, is the most ductile metal and can be pressed into a thin leaf or drawn out into a long fiber.
(a) If a sample of gold with a mass of 1.576 g, is pressed into a leaf of 5.271 ?m thickness, what is the area (in m2) of the leaf?
(b) If instead, the gold is drawn out into a cylindrical fiber of radius 2.400 ?m, what is the length (in m) of the fiber?
A 3.3 block of wood sits on a table. A 3.0 bullet, fired horizontally at a speed of 480, goes completely through the block, emerging at a speed of 200 .What is the speed of block immediately after the bullet exits.
Suppose a 63.00 kg boy and a 50.00 kg girl use a mass less rope in a tug-of-war on an icy, resistance-free surface. If the acceleration of the girl toward the boy is 3.00 m/s2, find out the magnitude of the acceleration of the boy toward girl.
The total translational kinetic energy of the molecules of a sample of gas at 447 K is 1.33 x 10^4 J, Find the average translational kinetic energy of a single molecule
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A boy uses this string to whirl a 10-kg stone in a horizontal circle of radius 10 m. The boy continuously increases the speed of the stone. At approximately illustrate what speed will the string break?
A gasoline engine absorbs 2,600 J of heat and performs 1,000 J of mechanical work in each cycle. Find the total of heat expelled in each cycle.
A length of wire has a total resistance of 120 ?. If cut up into N identical pieces, How many pieces did the original wire get cut up into
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A single strand of wire of adjustable length is wound around the circumference of a round balloon that has a diameter of 25.0 cm, what is the magnitude of the average value of the emf induced in the loop
A state highway patrol car radar unit uses a frequency of 8.00×10^9Hz. What frequency difference will the unit detect from a car receding at the speed of 44.50 from a stationary patrol car.
A horizontal uniform bar of mass 2.7 and length 3.1 is hung horizontally on two vertical strings. String 1 is attached to the end of bar, and string 2 is attached a distance 0.7 from other end. A monkey of mass 1.6 walks from one end of the bar to th..
Question: Field and force with three charges? What is the electric field at the location of Q1, due to Q 2 ?
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